2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
10 #include <afsconfig.h>
11 #include <afs/param.h>
25 osi_rwlock_t cm_volumeLock;
28 cm_ValidateVolume(void)
33 for (volp = cm_data.allVolumesp, count = 0; volp; volp=volp->allNextp, count++) {
34 if ( volp->magic != CM_VOLUME_MAGIC ) {
35 afsi_log("cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC");
36 fprintf(stderr, "cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC\n");
39 if ( volp->cellp && volp->cellp->magic != CM_CELL_MAGIC ) {
40 afsi_log("cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC");
41 fprintf(stderr, "cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC\n");
44 if ( volp->allNextp && volp->allNextp->magic != CM_VOLUME_MAGIC ) {
45 afsi_log("cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC");
46 fprintf(stderr, "cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC\n");
49 if ( count != 0 && volp == cm_data.allVolumesp ||
50 count > cm_data.maxVolumes ) {
51 afsi_log("cm_ValidateVolume failure: cm_data.allVolumep loop detected");
52 fprintf(stderr, "cm_ValidateVolume failure: cm_data.allVolumep loop detected\n");
57 if ( count != cm_data.currentVolumes ) {
58 afsi_log("cm_ValidateVolume failure: count != cm_data.currentVolumes");
59 fprintf(stderr, "cm_ValidateVolume failure: count != cm_data.currentVolumes\n");
67 cm_ShutdownVolume(void)
71 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
73 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
74 if (volp->vol[volType].ID)
75 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_alldown);
77 volp->cbExpiresRO = 0;
78 volp->cbServerpRO = NULL;
79 lock_FinalizeRWLock(&volp->rw);
85 void cm_InitVolume(int newFile, long maxVols)
87 static osi_once_t once;
89 if (osi_Once(&once)) {
90 lock_InitializeRWLock(&cm_volumeLock, "cm global volume lock", LOCK_HIERARCHY_VOLUME_GLOBAL);
93 cm_data.allVolumesp = NULL;
94 cm_data.currentVolumes = 0;
95 cm_data.maxVolumes = maxVols;
96 memset(cm_data.volumeNameHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
97 memset(cm_data.volumeRWIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
98 memset(cm_data.volumeROIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
99 memset(cm_data.volumeBKIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
100 cm_data.volumeLRUFirstp = cm_data.volumeLRULastp = NULL;
104 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
107 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
108 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
109 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_UPDATING_VL);
110 for (volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
111 volp->vol[volType].state = vl_unknown;
112 volp->vol[volType].serversp = NULL;
113 if (volp->vol[volType].ID)
114 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, vl_unknown, volp->vol[volType].state);
116 volp->cbExpiresRO = 0;
117 volp->cbServerpRO = NULL;
125 /* returns true if the id is a decimal integer, in which case we interpret it
126 * as an id. make the cache manager much simpler.
127 * Stolen from src/volser/vlprocs.c */
129 cm_VolNameIsID(char *aname)
132 while (tc = *aname++) {
133 if (tc > '9' || tc < '0')
141 * Update a volume. Caller holds a write lock on the volume (volp->rw).
144 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:38 (JHutz)
145 * Yes, we support multihomed fileservers.
146 * Since before we got the code from IBM.
147 * But to find out about multiple addresses on a multihomed server, you need
148 * to use VL_GetEntryByNameU and VL_GetAddrsU. If you use
149 * VL_GetEntryByNameO or VL_GetEntryByNameN, the vlserver just gives you one
150 * address per server.
151 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:39 (JHutz)
152 * see src/afs/afs_volume.c, paying particular attention to
153 * afs_NewVolumeByName, afs_SetupVolume, and InstallUVolumeEntry
154 * shadow / openafs / jaltman {ANDREW.CMU.EDU} 01:40 (Jeffrey Altman)
155 * thanks. The windows client calls the 0 versions.
156 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:51 (JHutz)
158 * By not using the N versions, you only get up to 8 sites instead of 13.
159 * By not using the U versions, you don't get to know about multihomed serve
160 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:52 (JHutz)
161 * Of course, you probably want to support the older versions for backward
162 * compatibility. If you do that, you need to call the newest interface
163 * first, and fall back to successively older versions if you get
167 long cm_UpdateVolumeLocation(struct cm_cell *cellp, cm_user_t *userp, cm_req_t *reqp,
173 cm_serverRef_t *tsrp;
175 struct sockaddr_in tsockAddr;
178 struct vldbentry vldbEntry;
179 struct nvldbentry nvldbEntry;
181 struct uvldbentry uvldbEntry;
186 enum volstatus rwNewstate = vl_online;
187 enum volstatus roNewstate = vl_online;
188 enum volstatus bkNewstate = vl_online;
189 #ifdef AFS_FREELANCE_CLIENT
195 lock_AssertWrite(&volp->rw);
198 * If the last volume update was in the last five
199 * minutes and it did not exist, then avoid the RPC
200 * and return No Such Volume immediately.
203 if ((volp->flags & CM_VOLUMEFLAG_NOEXIST) &&
204 (now < volp->lastUpdateTime + 600))
206 return CM_ERROR_NOSUCHVOLUME;
209 #ifdef AFS_FREELANCE_CLIENT
210 if ( cellp->cellID == AFS_FAKE_ROOT_CELL_ID && volp->vol[RWVOL].ID == AFS_FAKE_ROOT_VOL_ID )
213 memset(&vldbEntry, 0, sizeof(vldbEntry));
214 vldbEntry.flags |= VLF_RWEXISTS;
215 vldbEntry.volumeId[0] = AFS_FAKE_ROOT_VOL_ID;
221 while (volp->flags & CM_VOLUMEFLAG_UPDATING_VL) {
222 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation sleeping name %s:%s flags 0x%x",
223 volp->cellp->name, volp->namep, volp->flags);
224 osi_SleepW((LONG_PTR) &volp->flags, &volp->rw);
225 lock_ObtainWrite(&volp->rw);
226 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation awake name %s:%s flags 0x%x",
227 volp->cellp->name, volp->namep, volp->flags);
228 if (!(volp->flags & CM_VOLUMEFLAG_RESET)) {
229 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation nothing to do, waking others name %s:%s flags 0x%x",
230 volp->cellp->name, volp->namep, volp->flags);
231 osi_Wakeup((LONG_PTR) &volp->flags);
236 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_UPDATING_VL);
237 lock_ReleaseWrite(&volp->rw);
239 if (cellp->flags & CM_CELLFLAG_VLSERVER_INVALID)
240 cm_UpdateCell(cellp, 0);
242 /* now we have volume structure locked and held; make RPC to fill it */
243 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
244 osi_LogSaveString(afsd_logp,volp->cellp->name),
245 osi_LogSaveString(afsd_logp,volp->namep));
247 struct rx_connection * rxconnp;
249 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
253 rxconnp = cm_GetRxConn(connp);
255 code = VL_GetEntryByNameU(rxconnp, volp->namep, &uvldbEntry);
257 if ( code == RXGEN_OPCODE )
260 code = VL_GetEntryByNameN(rxconnp, volp->namep, &nvldbEntry);
263 if ( code == RXGEN_OPCODE ) {
264 code = VL_GetEntryByNameO(rxconnp, volp->namep, &vldbEntry);
267 rx_PutConnection(rxconnp);
268 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
269 code = cm_MapVLRPCError(code, reqp);
271 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
272 osi_LogSaveString(afsd_logp,volp->cellp->name),
273 osi_LogSaveString(afsd_logp,volp->namep), code);
275 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
276 osi_LogSaveString(afsd_logp,volp->cellp->name),
277 osi_LogSaveString(afsd_logp,volp->namep));
280 /* We can end up here with code == CM_ERROR_NOSUCHVOLUME if the base volume name
281 * does not exist and is not a numeric string but there might exist a .readonly volume.
282 * If the base name doesn't exist we will not care about the .backup that might be left
283 * behind since there should be no method to access it.
285 if (code == CM_ERROR_NOSUCHVOLUME &&
286 _atoi64(volp->namep) == 0 &&
287 volp->vol[RWVOL].ID == 0 &&
288 strlen(volp->namep) < (VL_MAXNAMELEN - 9)) {
289 char name[VL_MAXNAMELEN];
291 snprintf(name, VL_MAXNAMELEN, "%s.readonly", volp->namep);
293 /* now we have volume structure locked and held; make RPC to fill it */
294 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
295 osi_LogSaveString(afsd_logp,volp->cellp->name),
296 osi_LogSaveString(afsd_logp,name));
298 struct rx_connection * rxconnp;
300 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
304 rxconnp = cm_GetRxConn(connp);
306 code = VL_GetEntryByNameU(connp->rxconnp, name, &uvldbEntry);
308 if ( code == RXGEN_OPCODE )
311 code = VL_GetEntryByNameN(connp->rxconnp, name, &nvldbEntry);
314 if ( code == RXGEN_OPCODE ) {
315 code = VL_GetEntryByNameO(connp->rxconnp, name, &vldbEntry);
318 rx_PutConnection(rxconnp);
319 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
320 code = cm_MapVLRPCError(code, reqp);
322 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
323 osi_LogSaveString(afsd_logp,volp->cellp->name),
324 osi_LogSaveString(afsd_logp,name), code);
326 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
327 osi_LogSaveString(afsd_logp,volp->cellp->name),
328 osi_LogSaveString(afsd_logp,name));
331 lock_ObtainWrite(&volp->rw);
338 afs_int32 serverNumber[NMAXNSERVERS];
339 afs_int32 serverFlags[NMAXNSERVERS];
340 afsUUID serverUUID[NMAXNSERVERS];
341 afs_int32 rwServers_alldown = 1;
342 afs_int32 roServers_alldown = 1;
343 afs_int32 bkServers_alldown = 1;
344 char name[VL_MAXNAMELEN];
346 #ifdef AFS_FREELANCE_CLIENT
348 rwServers_alldown = 0;
351 /* clear out old bindings */
352 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
353 if (volp->vol[volType].serversp)
354 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
357 memset(serverUUID, 0, sizeof(serverUUID));
361 flags = vldbEntry.flags;
362 nServers = vldbEntry.nServers;
363 rwID = vldbEntry.volumeId[0];
364 roID = vldbEntry.volumeId[1];
365 bkID = vldbEntry.volumeId[2];
366 for ( i=0; i<nServers; i++ ) {
367 serverFlags[i] = vldbEntry.serverFlags[i];
368 serverNumber[i] = vldbEntry.serverNumber[i];
370 strncpy(name, vldbEntry.name, VL_MAXNAMELEN);
371 name[VL_MAXNAMELEN - 1] = '\0';
374 flags = nvldbEntry.flags;
375 nServers = nvldbEntry.nServers;
376 rwID = nvldbEntry.volumeId[0];
377 roID = nvldbEntry.volumeId[1];
378 bkID = nvldbEntry.volumeId[2];
379 for ( i=0; i<nServers; i++ ) {
380 serverFlags[i] = nvldbEntry.serverFlags[i];
381 serverNumber[i] = nvldbEntry.serverNumber[i];
383 strncpy(name, nvldbEntry.name, VL_MAXNAMELEN);
384 name[VL_MAXNAMELEN - 1] = '\0';
388 flags = uvldbEntry.flags;
389 nServers = uvldbEntry.nServers;
390 rwID = uvldbEntry.volumeId[0];
391 roID = uvldbEntry.volumeId[1];
392 bkID = uvldbEntry.volumeId[2];
393 for ( i=0, j=0; code == 0 && i<nServers && j<NMAXNSERVERS; i++ ) {
394 if ( !(uvldbEntry.serverFlags[i] & VLSERVER_FLAG_UUID) ) {
395 serverFlags[j] = uvldbEntry.serverFlags[i];
396 serverNumber[j] = uvldbEntry.serverNumber[i].time_low;
399 afs_uint32 * addrp, nentries, code, unique;
401 ListAddrByAttributes attrs;
404 memset(&attrs, 0, sizeof(attrs));
405 attrs.Mask = VLADDR_UUID;
406 attrs.uuid = uvldbEntry.serverNumber[i];
407 memset(&uuid, 0, sizeof(uuid));
408 memset(&addrs, 0, sizeof(addrs));
411 struct rx_connection *rxconnp;
413 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
417 rxconnp = cm_GetRxConn(connp);
418 code = VL_GetAddrsU(rxconnp, &attrs, &uuid, &unique, &nentries, &addrs);
419 rx_PutConnection(rxconnp);
420 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
423 code = cm_MapVLRPCError(code, reqp);
424 osi_Log2(afsd_logp, "CALL VL_GetAddrsU serverNumber %u FAILURE, code 0x%x",
428 osi_Log1(afsd_logp, "CALL VL_GetAddrsU serverNumber %u SUCCESS", i);
430 addrp = addrs.bulkaddrs_val;
431 for (k = 0; k < nentries && j < NMAXNSERVERS; j++, k++) {
432 serverFlags[j] = uvldbEntry.serverFlags[i];
433 serverNumber[j] = addrp[k];
434 serverUUID[j] = uuid;
437 xdr_free((xdrproc_t) xdr_bulkaddrs, &addrs);
440 code = CM_ERROR_INVAL;
443 nServers = j; /* update the server count */
444 strncpy(name, uvldbEntry.name, VL_MAXNAMELEN);
445 name[VL_MAXNAMELEN - 1] = '\0';
450 /* decode the response */
451 lock_ObtainWrite(&cm_volumeLock);
452 if (cm_VolNameIsID(volp->namep)) {
457 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
458 name[len - 7] = '\0';
459 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
460 name[len - 9] = '\0';
463 osi_Log2(afsd_logp, "cm_UpdateVolume name %s -> %s",
464 osi_LogSaveString(afsd_logp,volp->namep), osi_LogSaveString(afsd_logp,name));
466 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
467 cm_RemoveVolumeFromNameHashTable(volp);
469 strcpy(volp->namep, name);
471 cm_AddVolumeToNameHashTable(volp);
474 if (flags & VLF_DFSFILESET) {
475 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_DFS_VOLUME);
476 osi_Log1(afsd_logp, "cm_UpdateVolume Volume Group '%s' is a DFS File Set. Correct behavior is not implemented.",
477 osi_LogSaveString(afsd_logp, volp->namep));
480 if (flags & VLF_RWEXISTS) {
481 if (volp->vol[RWVOL].ID != rwID) {
482 if (volp->vol[RWVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
483 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
484 volp->vol[RWVOL].ID = rwID;
485 cm_AddVolumeToIDHashTable(volp, RWVOL);
488 if (volp->vol[RWVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
489 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
490 volp->vol[RWVOL].ID = 0;
492 if (flags & VLF_ROEXISTS) {
493 if (volp->vol[ROVOL].ID != roID) {
494 if (volp->vol[ROVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
495 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
496 volp->vol[ROVOL].ID = roID;
497 cm_AddVolumeToIDHashTable(volp, ROVOL);
500 if (volp->vol[ROVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
501 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
502 volp->vol[ROVOL].ID = 0;
504 if (flags & VLF_BACKEXISTS) {
505 if (volp->vol[BACKVOL].ID != bkID) {
506 if (volp->vol[BACKVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
507 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
508 volp->vol[BACKVOL].ID = bkID;
509 cm_AddVolumeToIDHashTable(volp, BACKVOL);
512 if (volp->vol[BACKVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
513 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
514 volp->vol[BACKVOL].ID = 0;
516 lock_ReleaseWrite(&cm_volumeLock);
517 for (i=0; i<nServers; i++) {
518 /* create a server entry */
519 tflags = serverFlags[i];
520 if (tflags & VLSF_DONTUSE)
522 tsockAddr.sin_port = htons(7000);
523 tsockAddr.sin_family = AF_INET;
524 tempAddr = htonl(serverNumber[i]);
525 tsockAddr.sin_addr.s_addr = tempAddr;
526 tsp = cm_FindServer(&tsockAddr, CM_SERVER_FILE);
528 if (tsp && (method == 2) && (tsp->flags & CM_SERVERFLAG_UUID)) {
530 * Check to see if the uuid of the server we know at this address
531 * matches the uuid of the server we are being told about by the
532 * vlserver. If not, ...?
534 if (!afs_uuid_equal(&serverUUID[i], &tsp->uuid)) {
535 char uuid1[128], uuid2[128];
538 afsUUID_to_string(&serverUUID[i], uuid1, sizeof(uuid1));
539 afsUUID_to_string(&tsp->uuid, uuid2, sizeof(uuid2));
540 afs_inet_ntoa_r(serverNumber[i], hoststr);
542 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation UUIDs do not match! %s != %s (%s)",
543 osi_LogSaveString(afsd_logp, uuid1),
544 osi_LogSaveString(afsd_logp, uuid2),
545 osi_LogSaveString(afsd_logp, hoststr));
551 * cm_NewServer will probe the file server which in turn will
552 * update the state on the volume group object. Do not probe
553 * in this thread. It will block the thread and can result in
554 * a recursive call to cm_UpdateVolumeLocation().
556 lock_ReleaseWrite(&volp->rw);
557 tsp = cm_NewServer(&tsockAddr, CM_SERVER_FILE, cellp, &serverUUID[i], CM_FLAG_NOPROBE);
558 lock_ObtainWrite(&volp->rw);
560 osi_assertx(tsp != NULL, "null cm_server_t");
563 * if this server was created by fs setserverprefs
564 * then it won't have either a cell assignment or
569 if ( (method == 2) && !(tsp->flags & CM_SERVERFLAG_UUID) &&
570 !afs_uuid_is_nil(&serverUUID[i])) {
571 tsp->uuid = serverUUID[i];
572 tsp->flags |= CM_SERVERFLAG_UUID;
575 /* and add it to the list(s). */
577 * Each call to cm_NewServerRef() increments the
578 * ref count of tsp. These reference will be dropped,
579 * if and when the volume is reset; see reset code
580 * earlier in this function.
582 if ((tflags & VLSF_RWVOL) && (flags & VLF_RWEXISTS)) {
583 tsrp = cm_NewServerRef(tsp, rwID);
584 cm_InsertServerList(&volp->vol[RWVOL].serversp, tsrp);
585 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
586 rwServers_alldown = 0;
588 if ((tflags & VLSF_ROVOL) && (flags & VLF_ROEXISTS)) {
589 tsrp = cm_NewServerRef(tsp, roID);
590 cm_InsertServerList(&volp->vol[ROVOL].serversp, tsrp);
593 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
594 roServers_alldown = 0;
596 /* We don't use VLSF_BACKVOL !?! */
597 /* Because only the backup on the server holding the RW
598 * volume can be valid. This check prevents errors if a
599 * RW is moved but the old backup is not removed.
601 if ((tflags & VLSF_RWVOL) && (flags & VLF_BACKEXISTS)) {
602 tsrp = cm_NewServerRef(tsp, bkID);
603 cm_InsertServerList(&volp->vol[BACKVOL].serversp, tsrp);
605 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
606 bkServers_alldown = 0;
608 /* Drop the reference obtained by cm_FindServer() */
615 * If the first n servers have the same ipRank, then we
616 * randomly pick one among them and move it to the beginning.
617 * We don't bother to re-order the whole list because
618 * the rest of the list is used only if the first server is
619 * down. We only do this for the RO list; we assume the other
620 * lists are length 1.
623 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
626 rwNewstate = rwServers_alldown ? vl_alldown : vl_online;
627 roNewstate = roServers_alldown ? vl_alldown : vl_online;
628 bkNewstate = bkServers_alldown ? vl_alldown : vl_online;
630 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_NOEXIST);
631 } else if (code == CM_ERROR_NOSUCHVOLUME || code == VL_NOENT || code == VL_BADNAME) {
632 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_NOEXIST);
634 rwNewstate = roNewstate = bkNewstate = vl_alldown;
637 if (volp->vol[RWVOL].state != rwNewstate) {
638 if (volp->vol[RWVOL].ID)
639 cm_VolumeStatusNotification(volp, volp->vol[RWVOL].ID, volp->vol[RWVOL].state, rwNewstate);
640 volp->vol[RWVOL].state = rwNewstate;
642 if (volp->vol[ROVOL].state != roNewstate) {
643 if (volp->vol[ROVOL].ID)
644 cm_VolumeStatusNotification(volp, volp->vol[ROVOL].ID, volp->vol[ROVOL].state, roNewstate);
645 volp->vol[ROVOL].state = roNewstate;
647 if (volp->vol[BACKVOL].state != bkNewstate) {
648 if (volp->vol[BACKVOL].ID)
649 cm_VolumeStatusNotification(volp, volp->vol[BACKVOL].ID, volp->vol[BACKVOL].state, bkNewstate);
650 volp->vol[BACKVOL].state = bkNewstate;
653 volp->lastUpdateTime = time(NULL);
656 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_RESET);
658 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_UPDATING_VL);
659 osi_Log4(afsd_logp, "cm_UpdateVolumeLocation done, waking others name %s:%s flags 0x%x code 0x%x",
660 osi_LogSaveString(afsd_logp,volp->cellp->name),
661 osi_LogSaveString(afsd_logp,volp->namep), volp->flags, code);
662 osi_Wakeup((LONG_PTR) &volp->flags);
667 /* Requires read or write lock on cm_volumeLock */
668 void cm_GetVolume(cm_volume_t *volp)
670 InterlockedIncrement(&volp->refCount);
673 cm_volume_t *cm_GetVolumeByFID(cm_fid_t *fidp)
678 lock_ObtainRead(&cm_volumeLock);
679 hash = CM_VOLUME_ID_HASH(fidp->volume);
680 /* The volumeID can be any one of the three types. So we must
681 * search the hash table for all three types until we find it.
682 * We will search in the order of RO, RW, BK.
684 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
685 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[ROVOL].ID )
690 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
691 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[RWVOL].ID )
697 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
698 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[BACKVOL].ID )
703 /* hold the volume if we found it */
707 lock_ReleaseRead(&cm_volumeLock);
711 long cm_FindVolumeByID(cm_cell_t *cellp, afs_uint32 volumeID, cm_user_t *userp,
712 cm_req_t *reqp, afs_uint32 flags, cm_volume_t **outVolpp)
715 #ifdef SEARCH_ALL_VOLUMES
718 char volNameString[VL_MAXNAMELEN];
722 lock_ObtainRead(&cm_volumeLock);
723 #ifdef SEARCH_ALL_VOLUMES
724 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
725 if (cellp == volp->cellp &&
726 ((unsigned) volumeID == volp->vol[RWVOL].ID ||
727 (unsigned) volumeID == volp->vol[ROVOL].ID ||
728 (unsigned) volumeID == volp->vol[BACKVOL].ID))
733 #endif /* SEARCH_ALL_VOLUMES */
735 hash = CM_VOLUME_ID_HASH(volumeID);
736 /* The volumeID can be any one of the three types. So we must
737 * search the hash table for all three types until we find it.
738 * We will search in the order of RO, RW, BK.
740 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
741 if ( cellp == volp->cellp && volumeID == volp->vol[ROVOL].ID )
746 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
747 if ( cellp == volp->cellp && volumeID == volp->vol[RWVOL].ID )
753 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
754 if ( cellp == volp->cellp && volumeID == volp->vol[BACKVOL].ID )
759 #ifdef SEARCH_ALL_VOLUMES
760 osi_assertx(volp == volp2, "unexpected cm_vol_t");
763 /* hold the volume if we found it */
767 lock_ReleaseRead(&cm_volumeLock);
771 lock_ObtainWrite(&volp->rw);
774 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
775 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
777 lock_ReleaseWrite(&volp->rw);
781 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
782 lock_ObtainWrite(&cm_volumeLock);
783 cm_AdjustVolumeLRU(volp);
784 lock_ReleaseWrite(&cm_volumeLock);
787 lock_ObtainRead(&cm_volumeLock);
789 lock_ReleaseRead(&cm_volumeLock);
794 /* otherwise, we didn't find it so consult the VLDB */
795 sprintf(volNameString, "%u", volumeID);
796 code = cm_FindVolumeByName(cellp, volNameString, userp, reqp,
797 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL, outVolpp);
799 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
800 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
801 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
804 code = cm_FindVolumeByID(linkedCellp, volumeID, userp, reqp,
805 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
812 long cm_FindVolumeByName(struct cm_cell *cellp, char *volumeNamep,
813 struct cm_user *userp, struct cm_req *reqp,
814 afs_uint32 flags, cm_volume_t **outVolpp)
817 #ifdef SEARCH_ALL_VOLUMES
821 char name[VL_MAXNAMELEN];
826 strncpy(name, volumeNamep, VL_MAXNAMELEN);
827 name[VL_MAXNAMELEN-1] = '\0';
830 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
832 name[len - 7] = '\0';
833 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
835 name[len - 9] = '\0';
840 lock_ObtainRead(&cm_volumeLock);
841 #ifdef SEARCH_ALL_VOLUMES
842 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
843 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0) {
848 #endif /* SEARCH_ALL_VOLUMES */
850 hash = CM_VOLUME_NAME_HASH(name);
851 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
852 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
856 #ifdef SEARCH_ALL_VOLUMES
857 osi_assertx(volp2 == volp, "unexpected cm_vol_t");
860 if (!volp && (flags & CM_GETVOL_FLAG_CREATE)) {
862 /* otherwise, get from VLDB */
865 * Change to a write lock so that we have exclusive use of
866 * the first cm_volume_t with a refCount of 0 so that we
867 * have time to increment it.
869 lock_ConvertRToW(&cm_volumeLock);
871 if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
872 #ifdef RECYCLE_FROM_ALL_VOLUMES_LIST
873 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
874 if ( volp->refCount == 0 ) {
875 /* There is one we can re-use */
880 for ( volp = cm_data.volumeLRULastp;
882 volp = (cm_volume_t *) osi_QPrev(&volp->q))
884 if ( volp->refCount == 0 ) {
885 /* There is one we can re-use */
891 osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
893 InterlockedIncrement(&volp->refCount);
894 lock_ReleaseWrite(&cm_volumeLock);
895 lock_ObtainWrite(&volp->rw);
896 lock_ObtainWrite(&cm_volumeLock);
898 osi_Log2(afsd_logp, "Recycling Volume %s:%s",
899 volp->cellp->name, volp->namep);
901 /* The volp is removed from the LRU queue in order to
902 * prevent two threads from attempting to recycle the
903 * same object. This volp must be re-inserted back into
904 * the LRU queue before this function exits.
906 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
907 cm_RemoveVolumeFromLRU(volp);
908 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
909 cm_RemoveVolumeFromNameHashTable(volp);
911 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
912 if (volp->vol[volType].qflags & CM_VOLUME_QFLAG_IN_HASH)
913 cm_RemoveVolumeFromIDHashTable(volp, volType);
914 if (volp->vol[volType].ID)
915 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_unknown);
916 volp->vol[volType].ID = 0;
917 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
918 lock_ReleaseWrite(&cm_volumeLock);
919 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
920 lock_ObtainWrite(&cm_volumeLock);
923 volp = &cm_data.volumeBaseAddress[cm_data.currentVolumes++];
924 memset(volp, 0, sizeof(cm_volume_t));
925 volp->magic = CM_VOLUME_MAGIC;
926 volp->allNextp = cm_data.allVolumesp;
927 cm_data.allVolumesp = volp;
928 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
929 lock_ReleaseWrite(&cm_volumeLock);
930 lock_ObtainWrite(&volp->rw);
931 lock_ObtainWrite(&cm_volumeLock);
932 volp->refCount = 1; /* starts off held */
935 strncpy(volp->namep, name, VL_MAXNAMELEN);
936 volp->namep[VL_MAXNAMELEN-1] = '\0';
937 volp->flags = CM_VOLUMEFLAG_RESET;
939 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
940 volp->vol[volType].state = vl_unknown;
941 volp->vol[volType].nextp = NULL;
942 volp->vol[volType].flags = 0;
944 volp->cbExpiresRO = 0;
945 volp->cbServerpRO = NULL;
946 volp->creationDateRO = 0;
947 cm_AddVolumeToNameHashTable(volp);
948 lock_ReleaseWrite(&cm_volumeLock);
953 lock_ReleaseRead(&cm_volumeLock);
956 return CM_ERROR_NOSUCHVOLUME;
958 lock_ObtainWrite(&volp->rw);
961 /* if we get here we are holding the mutex */
962 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
963 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
965 lock_ReleaseWrite(&volp->rw);
967 if (code == 0 && (type == BACKVOL && volp->vol[BACKVOL].ID == 0 ||
968 type == ROVOL && volp->vol[ROVOL].ID == 0))
969 code = CM_ERROR_NOSUCHVOLUME;
974 lock_ObtainWrite(&cm_volumeLock);
975 if (!(volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) ||
976 (flags & CM_GETVOL_FLAG_NO_LRU_UPDATE))
977 cm_AdjustVolumeLRU(volp);
978 lock_ReleaseWrite(&cm_volumeLock);
981 * do not return it to the caller but do insert it in the LRU
982 * otherwise it will be lost
984 lock_ObtainWrite(&cm_volumeLock);
985 if (!(volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) ||
986 (flags & CM_GETVOL_FLAG_NO_LRU_UPDATE))
987 cm_AdjustVolumeLRU(volp);
989 lock_ReleaseWrite(&cm_volumeLock);
992 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
993 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
994 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
997 code = cm_FindVolumeByName(linkedCellp, volumeNamep, userp, reqp,
998 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
1005 * Only call this function in response to a VNOVOL or VMOVED error
1006 * from a file server. Do not call it in response to CM_ERROR_NOSUCHVOLUME
1007 * as that can lead to recursive calls.
1009 long cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
1013 #ifdef SEARCH_ALL_VOLUMES
1020 return CM_ERROR_INVAL;
1022 cellp = cm_FindCellByID(fidp->cell, 0);
1024 return CM_ERROR_NOSUCHCELL;
1026 /* search for the volume */
1027 lock_ObtainRead(&cm_volumeLock);
1028 #ifdef SEARCH_ALL_VOLUMES
1029 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1030 if (cellp == volp->cellp &&
1031 (fidp->volume == volp->vol[RWVOL].ID ||
1032 fidp->volume == volp->vol[ROVOL].ID ||
1033 fidp->volume == volp->vol[BACKVOL].ID))
1036 #endif /* SEARCH_ALL_VOLUMES */
1038 hash = CM_VOLUME_ID_HASH(fidp->volume);
1039 /* The volumeID can be any one of the three types. So we must
1040 * search the hash table for all three types until we find it.
1041 * We will search in the order of RO, RW, BK.
1043 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
1044 if ( cellp == volp->cellp && fidp->volume == volp->vol[ROVOL].ID )
1048 /* try RW volumes */
1049 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
1050 if ( cellp == volp->cellp && fidp->volume == volp->vol[RWVOL].ID )
1055 /* try BK volumes */
1056 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
1057 if ( cellp == volp->cellp && fidp->volume == volp->vol[BACKVOL].ID )
1062 #ifdef SEARCH_ALL_VOLUMES
1063 osi_assertx(volp == volp2, "unexpected cm_vol_t");
1065 /* hold the volume if we found it */
1069 lock_ReleaseRead(&cm_volumeLock);
1072 return CM_ERROR_NOSUCHVOLUME;
1075 cm_data.mountRootGen = time(NULL);
1076 lock_ObtainWrite(&volp->rw);
1077 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1079 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
1080 lock_ReleaseWrite(&volp->rw);
1082 lock_ObtainRead(&cm_volumeLock);
1084 lock_ReleaseRead(&cm_volumeLock);
1089 /* find the appropriate servers from a volume */
1090 cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, afs_uint32 volume, cm_user_t *userp, cm_req_t *reqp)
1092 cm_serverRef_t **serverspp;
1093 cm_serverRef_t *current;
1097 lock_ObtainWrite(&cm_serverLock);
1099 if (volume == volp->vol[RWVOL].ID)
1100 serverspp = &volp->vol[RWVOL].serversp;
1101 else if (volume == volp->vol[ROVOL].ID)
1102 serverspp = &volp->vol[ROVOL].serversp;
1103 else if (volume == volp->vol[BACKVOL].ID)
1104 serverspp = &volp->vol[BACKVOL].serversp;
1106 lock_ReleaseWrite(&cm_serverLock);
1110 lock_ObtainWrite(&volp->rw);
1111 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1112 code = cm_UpdateVolumeLocation(volp->cellp, userp, reqp, volp);
1113 lock_ReleaseWrite(&volp->rw);
1121 * Increment the refCount on deleted items as well.
1122 * They will be freed by cm_FreeServerList when they get to zero
1124 for (current = *serverspp; current; current = current->next)
1125 cm_GetServerRef(current, TRUE);
1127 lock_ReleaseWrite(&cm_serverLock);
1132 void cm_PutVolume(cm_volume_t *volp)
1134 afs_int32 refCount = InterlockedDecrement(&volp->refCount);
1135 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow has occurred");
1138 /* return the read-only volume, if there is one, or the read-write volume if
1141 long cm_GetROVolumeID(cm_volume_t *volp)
1145 lock_ObtainRead(&volp->rw);
1146 if (volp->vol[ROVOL].ID && volp->vol[ROVOL].serversp)
1147 id = volp->vol[ROVOL].ID;
1149 id = volp->vol[RWVOL].ID;
1150 lock_ReleaseRead(&volp->rw);
1155 void cm_RefreshVolumes(int lifetime)
1163 /* force mount point target updates */
1164 if (cm_data.mountRootGen + lifetime <= now)
1165 cm_data.mountRootGen = now;
1168 * force a re-loading of volume data from the vldb
1169 * if the lifetime for the cached data has expired
1171 lock_ObtainRead(&cm_volumeLock);
1172 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1173 InterlockedIncrement(&volp->refCount);
1174 lock_ReleaseRead(&cm_volumeLock);
1176 if (!(volp->flags & CM_VOLUMEFLAG_RESET)) {
1177 lock_ObtainWrite(&volp->rw);
1178 if (volp->lastUpdateTime + lifetime <= now)
1179 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1180 lock_ReleaseWrite(&volp->rw);
1183 lock_ObtainRead(&cm_volumeLock);
1184 refCount = InterlockedDecrement(&volp->refCount);
1185 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1187 lock_ReleaseRead(&cm_volumeLock);
1191 cm_CheckOfflineVolumeState(cm_volume_t *volp, cm_vol_state_t *statep, afs_uint32 volID,
1192 afs_uint32 *onlinep, afs_uint32 *volumeUpdatedp)
1196 AFSFetchVolumeStatus volStat;
1201 struct rx_connection * rxconnp;
1203 char offLineMsg[256];
1205 long alldown, alldeleted;
1206 cm_serverRef_t *serversp;
1210 OfflineMsg = offLineMsg;
1213 if (statep->ID != 0 && (!volID || volID == statep->ID)) {
1214 /* create fid for volume root so that VNOVOL and VMOVED errors can be processed */
1215 cm_SetFid(&fid, volp->cellp->cellID, statep->ID, 1, 1);
1217 if (!statep->serversp && !(*volumeUpdatedp)) {
1219 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1220 *volumeUpdatedp = 1;
1223 lock_ObtainRead(&cm_serverLock);
1224 if (statep->serversp) {
1227 for (serversp = statep->serversp; serversp; serversp = serversp->next) {
1228 if (serversp->status == srv_deleted)
1235 if (serversp->status == srv_busy || serversp->status == srv_offline)
1236 serversp->status = srv_not_busy;
1238 lock_ReleaseRead(&cm_serverLock);
1240 if (alldeleted && !(*volumeUpdatedp)) {
1242 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1243 *volumeUpdatedp = 1;
1246 if (statep->state == vl_busy || statep->state == vl_offline || statep->state == vl_unknown ||
1247 (!alldown && statep->state == vl_alldown)) {
1249 req.flags |= CM_REQ_OFFLINE_VOL_CHK;
1251 lock_ReleaseWrite(&volp->rw);
1253 code = cm_ConnFromVolume(volp, statep->ID, cm_rootUserp, &req, &connp);
1257 rxconnp = cm_GetRxConn(connp);
1258 code = RXAFS_GetVolumeStatus(rxconnp, statep->ID,
1259 &volStat, &Name, &OfflineMsg, &MOTD);
1260 rx_PutConnection(rxconnp);
1261 } while (cm_Analyze(connp, cm_rootUserp, &req, &fid, NULL, NULL, NULL, code));
1262 code = cm_MapRPCError(code, &req);
1264 lock_ObtainWrite(&volp->rw);
1265 if (code == 0 && volStat.Online) {
1266 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_online);
1267 statep->state = vl_online;
1269 } else if (code == CM_ERROR_NOACCESS) {
1270 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_unknown);
1271 statep->state = vl_unknown;
1274 } else if (alldown && statep->state != vl_alldown) {
1275 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1276 statep->state = vl_alldown;
1278 } else if (statep->state != vl_alldown) {
1279 lock_ReleaseRead(&cm_serverLock);
1280 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1281 statep->state = vl_alldown;
1286 /* The return code is 0 if the volume is not online and
1287 * 1 if the volume is online
1290 cm_CheckOfflineVolume(cm_volume_t *volp, afs_uint32 volID)
1294 afs_uint32 online = 0;
1295 afs_uint32 volumeUpdated = 0;
1297 lock_ObtainWrite(&volp->rw);
1299 if (volp->flags & CM_VOLUMEFLAG_RESET) {
1301 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1305 cm_CheckOfflineVolumeState(volp, &volp->vol[RWVOL], volID, &online, &volumeUpdated);
1306 cm_CheckOfflineVolumeState(volp, &volp->vol[ROVOL], volID, &online, &volumeUpdated);
1307 cm_CheckOfflineVolumeState(volp, &volp->vol[BACKVOL], volID, &online, &volumeUpdated);
1309 lock_ReleaseWrite(&volp->rw);
1315 * called from the Daemon thread.
1316 * when checking the offline status, check those of the most recently used volumes first.
1318 void cm_CheckOfflineVolumes(void)
1322 extern int daemon_ShutdownFlag;
1323 extern int powerStateSuspended;
1325 lock_ObtainRead(&cm_volumeLock);
1326 for (volp = cm_data.volumeLRULastp;
1327 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1328 volp=(cm_volume_t *) osi_QPrev(&volp->q)) {
1330 * Skip volume entries that did not exist last time
1331 * the vldb was queried. For those entries wait until
1332 * the next actual request is received for the volume
1333 * before checking its state.
1335 if ((volp->qflags & CM_VOLUME_QFLAG_IN_HASH) &&
1336 !(volp->flags & CM_VOLUMEFLAG_NOEXIST)) {
1337 InterlockedIncrement(&volp->refCount);
1338 lock_ReleaseRead(&cm_volumeLock);
1339 cm_CheckOfflineVolume(volp, 0);
1340 lock_ObtainRead(&cm_volumeLock);
1341 refCount = InterlockedDecrement(&volp->refCount);
1342 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1345 lock_ReleaseRead(&cm_volumeLock);
1350 cm_UpdateVolumeStatusInt(cm_volume_t *volp, struct cm_vol_state *statep)
1352 enum volstatus newStatus;
1353 cm_serverRef_t *tsrp;
1355 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
1358 if (!volp || !statep) {
1365 lock_ObtainWrite(&cm_serverLock);
1366 for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
1368 sprintf(addr, "%d.%d.%d.%d",
1369 ((tsp->addr.sin_addr.s_addr & 0xff)),
1370 ((tsp->addr.sin_addr.s_addr & 0xff00)>> 8),
1371 ((tsp->addr.sin_addr.s_addr & 0xff0000)>> 16),
1372 ((tsp->addr.sin_addr.s_addr & 0xff000000)>> 24));
1374 if (tsrp->status == srv_deleted) {
1375 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s deleted",
1376 statep->ID, osi_LogSaveString(afsd_logp,addr));
1380 cm_GetServerNoLock(tsp);
1381 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
1383 if (tsrp->status == srv_busy) {
1384 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s busy",
1385 statep->ID, osi_LogSaveString(afsd_logp,addr));
1388 } else if (tsrp->status == srv_offline) {
1389 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s offline",
1390 statep->ID, osi_LogSaveString(afsd_logp,addr));
1394 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s online",
1395 statep->ID, osi_LogSaveString(afsd_logp,addr));
1400 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s down",
1401 statep->ID, osi_LogSaveString(afsd_logp,addr));
1403 cm_PutServerNoLock(tsp);
1406 lock_ReleaseWrite(&cm_serverLock);
1408 osi_Log5(afsd_logp, "cm_UpdateVolumeStatusInt allDown %d allBusy %d someBusy %d someOffline %d allOffline %d",
1409 allDown, allBusy, someBusy, someOffline, allOffline);
1412 newStatus = vl_alldown;
1413 else if (allBusy || (someBusy && someOffline))
1414 newStatus = vl_busy;
1415 else if (allOffline)
1416 newStatus = vl_offline;
1418 newStatus = vl_online;
1420 if (statep->ID && statep->state != newStatus)
1421 cm_VolumeStatusNotification(volp, statep->ID, statep->state, newStatus);
1423 statep->state = newStatus;
1427 cm_UpdateVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1430 if (volp->vol[RWVOL].ID == volID) {
1431 cm_UpdateVolumeStatusInt(volp, &volp->vol[RWVOL]);
1432 } else if (volp->vol[ROVOL].ID == volID) {
1433 cm_UpdateVolumeStatusInt(volp, &volp->vol[ROVOL]);
1434 } else if (volp->vol[BACKVOL].ID == volID) {
1435 cm_UpdateVolumeStatusInt(volp, &volp->vol[BACKVOL]);
1438 * If we are called with volID == 0 then something has gone wrong.
1439 * Most likely a race occurred in the server volume list maintenance.
1440 * Since we don't know which volume's status should be updated,
1441 * just update all of them that are known to exist. Better to be
1442 * correct than fast.
1445 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1446 if (volp->vol[volType].ID != 0)
1447 cm_UpdateVolumeStatusInt(volp, &volp->vol[volType]);
1453 ** Finds all volumes that reside on this server and reorders their
1454 ** RO list according to the changed rank of server.
1456 void cm_ChangeRankVolume(cm_server_t *tsp)
1462 /* find volumes which might have RO copy on server*/
1463 lock_ObtainRead(&cm_volumeLock);
1464 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1466 code = 1 ; /* assume that list is unchanged */
1467 InterlockedIncrement(&volp->refCount);
1468 lock_ReleaseRead(&cm_volumeLock);
1469 lock_ObtainWrite(&volp->rw);
1471 if ((tsp->cellp==volp->cellp) && (volp->vol[ROVOL].serversp))
1472 code =cm_ChangeRankServer(&volp->vol[ROVOL].serversp, tsp);
1474 /* this volume list was changed */
1476 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
1478 lock_ReleaseWrite(&volp->rw);
1479 lock_ObtainRead(&cm_volumeLock);
1480 refCount = InterlockedDecrement(&volp->refCount);
1481 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1483 lock_ReleaseRead(&cm_volumeLock);
1486 /* dump all volumes that have reference count > 0 to a file.
1487 * cookie is used to identify this batch for easy parsing,
1488 * and it a string provided by a caller
1490 int cm_DumpVolumes(FILE *outputFile, char *cookie, int lock)
1497 lock_ObtainRead(&cm_scacheLock);
1498 lock_ObtainRead(&cm_volumeLock);
1501 sprintf(output, "%s - dumping volumes - cm_data.currentVolumes=%d, cm_data.maxVolumes=%d\r\n",
1502 cookie, cm_data.currentVolumes, cm_data.maxVolumes);
1503 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1505 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1508 char *srvStr = NULL;
1509 afs_uint32 srvStrRpc = TRUE;
1513 if (volp->cbServerpRO) {
1514 if (!((volp->cbServerpRO->flags & CM_SERVERFLAG_UUID) &&
1515 UuidToString((UUID *)&volp->cbServerpRO->uuid, &srvStr) == RPC_S_OK)) {
1516 srvStr = malloc(16);
1518 afs_inet_ntoa_r(volp->cbServerpRO->addr.sin_addr.s_addr, srvStr);
1522 if (volp->cbExpiresRO) {
1523 t = volp->cbExpiresRO;
1527 cbt[strlen(cbt)-1] = '\0';
1530 if (volp->creationDateRO) {
1531 t = volp->creationDateRO;
1534 cdrot = strdup(cdrot);
1535 cdrot[strlen(cdrot)-1] = '\0';
1540 "%s - volp=0x%p cell=%s name=%s rwID=%u roID=%u bkID=%u flags=0x%x:%x "
1541 "cbServerpRO='%s' cbExpiresRO='%s' creationDateRO='%s' refCount=%u\r\n",
1542 cookie, volp, volp->cellp->name, volp->namep, volp->vol[RWVOL].ID,
1543 volp->vol[ROVOL].ID, volp->vol[BACKVOL].ID, volp->flags, volp->qflags,
1544 srvStr ? srvStr : "<none>", cbt ? cbt : "<none>", cdrot ? cdrot : "<none>",
1546 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1550 RpcStringFree(&srvStr);
1559 sprintf(output, "%s - Done dumping volumes.\r\n", cookie);
1560 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1563 lock_ReleaseRead(&cm_volumeLock);
1564 lock_ReleaseRead(&cm_scacheLock);
1571 * String hash function used by SDBM project.
1572 * It was chosen because it is fast and provides
1575 afs_uint32 SDBMHash(const char * str)
1577 afs_uint32 hash = 0;
1583 for(i = 0, len = strlen(str); i < len; i++)
1585 hash = str[i] + (hash << 6) + (hash << 16) - hash;
1588 return (hash & 0x7FFFFFFF);
1591 /* call with volume write-locked and mutex held */
1592 void cm_AddVolumeToNameHashTable(cm_volume_t *volp)
1596 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
1599 i = CM_VOLUME_NAME_HASH(volp->namep);
1601 volp->nameNextp = cm_data.volumeNameHashTablep[i];
1602 cm_data.volumeNameHashTablep[i] = volp;
1603 _InterlockedOr(&volp->qflags, CM_VOLUME_QFLAG_IN_HASH);
1606 /* call with volume write-locked and mutex held */
1607 void cm_RemoveVolumeFromNameHashTable(cm_volume_t *volp)
1609 cm_volume_t **lvolpp;
1613 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH) {
1614 /* hash it out first */
1615 i = CM_VOLUME_NAME_HASH(volp->namep);
1616 for (lvolpp = &cm_data.volumeNameHashTablep[i], tvolp = cm_data.volumeNameHashTablep[i];
1618 lvolpp = &tvolp->nameNextp, tvolp = tvolp->nameNextp) {
1619 if (tvolp == volp) {
1620 *lvolpp = volp->nameNextp;
1621 _InterlockedAnd(&volp->qflags, ~CM_VOLUME_QFLAG_IN_HASH);
1622 volp->nameNextp = NULL;
1629 /* call with volume write-locked and mutex held */
1630 void cm_AddVolumeToIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1633 struct cm_vol_state * statep;
1635 statep = cm_VolumeStateByType(volp, volType);
1637 if (statep->qflags & CM_VOLUME_QFLAG_IN_HASH)
1640 i = CM_VOLUME_ID_HASH(statep->ID);
1644 statep->nextp = cm_data.volumeRWIDHashTablep[i];
1645 cm_data.volumeRWIDHashTablep[i] = volp;
1648 statep->nextp = cm_data.volumeROIDHashTablep[i];
1649 cm_data.volumeROIDHashTablep[i] = volp;
1652 statep->nextp = cm_data.volumeBKIDHashTablep[i];
1653 cm_data.volumeBKIDHashTablep[i] = volp;
1656 _InterlockedOr(&statep->qflags, CM_VOLUME_QFLAG_IN_HASH);
1660 /* call with volume write-locked and mutex held */
1661 void cm_RemoveVolumeFromIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1663 cm_volume_t **lvolpp;
1665 struct cm_vol_state * statep;
1668 statep = cm_VolumeStateByType(volp, volType);
1670 if (statep->qflags & CM_VOLUME_QFLAG_IN_HASH) {
1671 /* hash it out first */
1672 i = CM_VOLUME_ID_HASH(statep->ID);
1676 lvolpp = &cm_data.volumeRWIDHashTablep[i];
1677 tvolp = cm_data.volumeRWIDHashTablep[i];
1680 lvolpp = &cm_data.volumeROIDHashTablep[i];
1681 tvolp = cm_data.volumeROIDHashTablep[i];
1684 lvolpp = &cm_data.volumeBKIDHashTablep[i];
1685 tvolp = cm_data.volumeBKIDHashTablep[i];
1688 osi_assertx(0, "invalid volume type");
1691 if (tvolp == volp) {
1692 *lvolpp = statep->nextp;
1693 _InterlockedAnd(&statep->qflags, ~CM_VOLUME_QFLAG_IN_HASH);
1694 statep->nextp = NULL;
1698 lvolpp = &tvolp->vol[volType].nextp;
1699 tvolp = tvolp->vol[volType].nextp;
1704 /* must be called with cm_volumeLock write-locked! */
1705 void cm_AdjustVolumeLRU(cm_volume_t *volp)
1707 lock_AssertWrite(&cm_volumeLock);
1709 if (volp == cm_data.volumeLRUFirstp)
1712 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
1713 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1714 osi_QAddH((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1715 _InterlockedOr(&volp->qflags, CM_VOLUME_QFLAG_IN_LRU_QUEUE);
1717 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1720 /* must be called with cm_volumeLock write-locked! */
1721 void cm_MoveVolumeToLRULast(cm_volume_t *volp)
1723 lock_AssertWrite(&cm_volumeLock);
1725 if (volp == cm_data.volumeLRULastp)
1728 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
1729 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1730 osi_QAddT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1731 _InterlockedOr(&volp->qflags, CM_VOLUME_QFLAG_IN_LRU_QUEUE);
1733 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1736 /* must be called with cm_volumeLock write-locked! */
1737 void cm_RemoveVolumeFromLRU(cm_volume_t *volp)
1739 lock_AssertWrite(&cm_volumeLock);
1741 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) {
1742 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1743 _InterlockedAnd(&volp->qflags, ~CM_VOLUME_QFLAG_IN_LRU_QUEUE);
1746 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1749 static char * volstatus_str(enum volstatus vs)
1765 void cm_VolumeStatusNotification(cm_volume_t * volp, afs_uint32 volID, enum volstatus old, enum volstatus new)
1767 char volstr[CELL_MAXNAMELEN + VL_MAXNAMELEN]="";
1770 if (volID == volp->vol[RWVOL].ID)
1772 else if (volID == volp->vol[ROVOL].ID)
1774 else if (volID == volp->vol[BACKVOL].ID)
1778 snprintf(volstr, sizeof(volstr), "%s:%s%s", volp->cellp->name, volp->namep, ext);
1780 osi_Log4(afsd_logp, "VolumeStatusNotification: %-48s [%10u] (%s -> %s)",
1781 osi_LogSaveString(afsd_logp, volstr), volID, volstatus_str(old), volstatus_str(new));
1783 cm_VolStatus_Change_Notification(volp->cellp->cellID, volID, new);
1786 enum volstatus cm_GetVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1788 cm_vol_state_t * statep = cm_VolumeStateByID(volp, volID);
1790 return statep->state;
1795 /* Renew .readonly volume callbacks that are more than
1796 * 30 minutes old. (A volume callback is issued for 2 hours.)
1799 cm_VolumeRenewROCallbacks(void)
1802 time_t minexp = time(NULL) + 90 * 60;
1803 extern int daemon_ShutdownFlag;
1804 extern int powerStateSuspended;
1806 lock_ObtainRead(&cm_volumeLock);
1807 for (volp = cm_data.allVolumesp;
1808 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1809 volp=volp->allNextp) {
1810 if ( volp->cbExpiresRO > 0 && volp->cbExpiresRO < minexp) {
1815 cm_SetFid(&fid, volp->cellp->cellID, volp->vol[ROVOL].ID, 1, 1);
1819 lock_ReleaseRead(&cm_volumeLock);
1820 if (cm_GetSCache(&fid, &scp, cm_rootUserp, &req) == 0) {
1821 lock_ObtainWrite(&scp->rw);
1822 cm_GetCallback(scp, cm_rootUserp, &req, 1);
1823 lock_ReleaseWrite(&scp->rw);
1824 cm_ReleaseSCache(scp);
1826 lock_ObtainRead(&cm_volumeLock);
1829 lock_ReleaseRead(&cm_volumeLock);
1833 cm_VolumeStateByType(cm_volume_t *volp, afs_uint32 volType)
1835 return &volp->vol[volType];
1839 cm_VolumeStateByID(cm_volume_t *volp, afs_uint32 id)
1841 cm_vol_state_t * statep = NULL;
1843 if (id == volp->vol[RWVOL].ID)
1844 statep = &volp->vol[RWVOL];
1845 else if (id == volp->vol[ROVOL].ID)
1846 statep = &volp->vol[ROVOL];
1847 else if (id == volp->vol[BACKVOL].ID)
1848 statep = &volp->vol[BACKVOL];
1854 cm_VolumeStateByName(cm_volume_t *volp, char *volname)
1856 size_t len = strlen(volname);
1857 cm_vol_state_t *statep;
1859 if (cm_stricmp_utf8N(".readonly", &volname[len-9]) == 0)
1860 statep = &volp->vol[ROVOL];
1861 else if (cm_stricmp_utf8N(".backup", &volname[len-7]) == 0)
1862 statep = &volp->vol[BACKVOL];
1864 statep = &volp->vol[RWVOL];
1870 cm_VolumeType(cm_volume_t *volp, afs_uint32 id)
1872 if (id == volp->vol[RWVOL].ID)
1874 else if (id == volp->vol[ROVOL].ID)
1876 else if (id == volp->vol[BACKVOL].ID)